Convert JSON string to PHP short-array

jsonToArray.php

<?php

$json = <<<EOT
{"PASTE_YOUR":"JSON_HERE"}
EOT;

echo '[' . PHP_EOL;
jsonToArray(json_decode($json, true), 1);
echo ']';

function jsonToArray($data, $indentLevel = 0)
{
    $keys = array_keys($data);
    $shouldShowKey = array_keys($keys) !== $keys;

    foreach ($data as $key => $value) {
        $key = is_numeric($key) ? $key : "'$key'";

        if (is_array($value)) {
            $keyPrefix = $shouldShowKey ? $key . ' => [' : '[';

            echo str_repeat(" ", $indentLevel * 4) . $keyPrefix . PHP_EOL;
            jsonToArray($value, $indentLevel + 1);
            echo str_repeat(" ", $indentLevel * 4) . '],' . PHP_EOL;
        } else {
            $keyPrefix = $shouldShowKey ? "$key => " : '';
            if (! is_bool($value) && ! is_numeric($value)) {
                $value = "'$value'";
            }

            echo str_repeat(" ", $indentLevel * 4) . $keyPrefix . $value . ',' . PHP_EOL;
        }
    }
}